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Radiant|Lab Grown|IGI

0.51ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG818661966

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG818661966

Diamond specifications and retailer prices

From £114 GBP
As of November 3, 2026
Save £622 GBP (85%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £736 GBP at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 0.51ct lab-grown radiant diamond

This 0.51ct lab-grown radiant sits in the half to three-quarter carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818661966 or 818661966. Listed at 21 retailers as of November 3, 2026, with prices from £114 to £736, a £622 spread on the same certified stone. Reve Diamonds lists it at £736. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.1°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818661966
Dimensions5.67 × 4.03 × 2.79 mm
L/W Ratio1.41
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.67 mm4.03 mm0.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818661966
Side View
Table 64.0%Crown 41.1°Girdle: STK-THKPavilion 37.1°Culet: NoneDepth 69.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 3
Current: £213 GBP|Low: £114 GBP|High: £748 GBP|Avg: £302 GBP|-0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Reve Diamonds
November 4, 2026
Retailer 4£114 GBP
Retailer 5£122 GBP
Retailer 7£129 GBP
Retailer 6£131 GBP
Retailer 8£178 GBP
Retailer 1£213 GBP
Retailer 13£225 GBP
Retailer 11£229 GBP
Retailer 9£248 GBP
Retailer 16£250 GBP
Retailer 15£267 GBP
Retailer 10£321 GBP
Retailer 2£349 GBP
Retailer 17£385 GBP
Retailer 14£429 GBP
Retailer 3£447 GBP
Retailer 12£590 GBP
Reve Diamonds£736 GBP

35 data points across 18 retailers

21 retailers£114 GBP to £736 GBP

Retailer 1
-
£102 GBP
Price last confirmed 27 days ago
A
Retailer 2
-
£114 GBP
View
Final sale: no returns
Retailer 3
-
£122 GBP
View
Price last confirmed 39 days ago
Retailer 4
-
£127 GBP
View
Price last confirmed 23 days ago
Retailer 5
-
£127 GBP
View
Price last confirmed 32 days ago
Retailer 6
-
£129 GBP
View
Price last confirmed 40 days ago
A
Retailer 7
-
£178 GBP
View
A
Retailer 8
-
£213 GBP
View
A
Retailer 9
-
£225 GBP
View
A
Retailer 10
-
£229 GBP
View
A
Retailer 11
-
£248 GBP
View
A
Retailer 12
-
£250 GBP
View
Retailer 13
-
£267 GBP
View
Price last confirmed 14 days ago
B+
Retailer 14
-
£321 GBP
View
B+
Retailer 15
-
£349 GBP
View
B+
Retailer 16
-
£385 GBP
View
Retailer 17
-
£406 GBP
View
Price last confirmed 35 days ago
B
Retailer 18
-
£429 GBP
View
B
Retailer 19
-
£447 GBP
View
B
Retailer 20
-
£590 GBP
View
Most Expensive
B
Reve Diamonds
C24E94FE2 · Nov 4
£736 GBP
$994 USD
View
20 more retailers have this diamond
Prices start from £114 GBPSave up to £622 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
0.51ct Radiant
£114 GBP